UESaveFile: prevent reloading data on save.

src/UESaveFile/UESaveFile.cpp

@@ -39,6 +39,10 @@ auto UESaveFile::lastError() const -> const std::string& {
 }
 
 auto UESaveFile::reloadData() -> bool {
+    if(_noReloadAfterSave) {
+        return valid();
+    }
+
     loadData();
     return valid();
 }
@@ -48,7 +52,7 @@ auto UESaveFile::props() -> Containers::ArrayView<UnrealPropertyBase::ptr> {
 }
 
 auto UESaveFile::saveToFile() -> bool {
-    BinaryWriter writer{_filepath + ".other"};
+    BinaryWriter writer{_filepath + ".tmp"};
 
     if(!writer.open()) {
         return false;
@@ -97,6 +101,21 @@ auto UESaveFile::saveToFile() -> bool {
 
     writer.writeUnsignedInt(0);
 
+    if(!Utility::Directory::copy(_filepath, _filepath + ".bak")) {
+        return false;
+    }
+
+    if(!Utility::Directory::rm(_filepath)) {
+        return false;
+    }
+
+    if(!Utility::Directory::move(_filepath + ".tmp", _filepath)) {
+        Utility::Directory::move(_filepath + ".bak", _filepath);
+        return false;
+    }
+
+    _noReloadAfterSave = true;
+
     return true;
 }
 

src/UESaveFile/UESaveFile.h

@@ -63,6 +63,8 @@ class UESaveFile {
 
         std::string _filepath;
 
+        bool _noReloadAfterSave = false;
+
         Containers::StaticArray<4, char> _magicBytes{'G', 'V', 'A', 'S'};
 
         UnsignedInt _saveVersion = 0;